This program is a running clock uses the IM2 (interupt manager 2) to have a running clock at the top right of the screen on a 48K ZX Spectrum.
This is meant as a test on how IM2 works.
to compile, at a DOS prompt, type "compile", without the quotes.
To start the clock, after loading the TAP - RUN 40 To stop the clock - RUN 60
This program only runs on a 48k model
on a Sinclair 128k/+2 in 128 Mode, gives a rather fun crash
on a Sinclair +2a/+3 in 128 Mode, just crashes
On a Sinclair 128k/+2/+2a/+3 in 48K mode, works well
This is from the IM2 article found in Sinclair User magazine issue 78, pages 71-72
a link to the magazine page(s) https://archive.org/details/sinclair-user-magazine-078